On a straight road, luis is 10 km south of a water tower and don is 15 km north of the same water tower. relative to the water tower, where is the midpoint of the positions of luis and don?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

Use the distance formula to find the distance between (-3,5) and (3,1)

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations